P200A21 the charge movement flap (cylinder bank 1) has a malfunction

Fault code P200A21 the charge movement flap (cylinder bank 1) has a malfunction. the signal amplitude is less than the minimum amplitude is set in the engine control module when ECU sens irregular movement in the intake manifold swirl flap runner actuator motor. this swirl flap actuator motor is use to take intake air into the egine through intake manifold as per the requirement. swirl flap motor open and close according to the requirement of engine. if due to some reasons like swirl flap motor open circuit, loos connection between swirl flap and motor, or broken swirl flap if it does not open or close accordingly then fault code P200A21 the charge movement flap (cylinder bank 1) has a malfunction is store in control module. the signal amplitude is less than the minimum amplitude store in to engine control module.

charge swirl flap motor actuator assembly

How to trouble shoot fault code P200A21 :

  • Mechanic need to scan the vehicle with the help of scan tool, to find out the fault code present in the engine control module. check weather the fault code is pointing toword the same problem according to customer complain. in this problem customer complain would be low boost power or slightly missing at engine.
  • if fault code P200A21 the charge movement flap (cylinder bank 1) has a malfunction is present in ECU. then it is indicating problem toword the charge swirl flap motor failure. there are two reasons for this fault code to be store in engine control module. first problem is it possible that power or signal connection with charge flap motor is not connected properly, loos connection or faulty swirl flap motor. the second problem is swirl flap itself broken or the connection between swirl flap or it motors due to broken connecting rod between them. if all the above swirl flap motor, swirl flap or connecting rod between them is good then there might be some other problems. like carbon deposit at intake manifold runner at the place of swirl flap. check the connecting rod between motor and swirl flap most of the time it get slip from its place.

Step #2 :

The other reason behind this problem is fuel supply to the injectors from high pressure pump. if high pressure pump is weak then it will not supply proper fuel to the injectors. if fuel pump is weak then it will send signal to the engine control module , ECU will open or close charge flap motor according the fuel pump signal. as the fuel supply will more then the flap motor will open more and if the fuel supply is less then the flap will open too less.

check the outer pressure at high pressure fuel pump if the pressure does not meat the require pressure then the problem is in high pressure pump. beofre replacing high pressure pump you should change the high pressure fuel pump regulator valve . if it works fine after replacing regulator switch and increase the fuel pressure then it is ok but if not then change the high pressure pump whole assembly. doing this can solve the problem of low boost pressure or slightly missing at engine.

Cuases of P200A21 the charge movement flap (cylinder bank 1) has a malfunction :

  • Faulty charge movement swirl flap.
  • Loos connection with swirl flap motor.
  • Broken swirl flap.
  • Faulty high pressure fuel pump.
  • Also failure of high pressure fuel pump switch.

Symptoms :

  • Low boost power.
  • Slighlty missing in engine.
  • Low power at high speed.
  • warning light will illuminate on cluster meter.

Solution of Cuases of P200A21 the charge movement flap (cylinder bank 1) has a malfunction :

  • Repair open wirirng harness of swirl flap actuator motor.
  • Replace faulty swirl flap motor.
  • Repair faulty swirl flap.
  • Replace faulty high pressure fuel pump.
  • Also replace high pressure fuel pump ragulator valve.

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